CODEWITHSUNDEEP
javascriptecmascript-6
Majid Ainizoda
Majid Ainizoda

Reputation: 149

Putting array elements in another by spread method (but a little differently)

I used another (my) way to store the elements of some array in another as a spread method. I used join method for this way, but the array contains only one. Here's my code:

const arr = [1, 2, 3];
const newArray = [eval(arr.join(', ')), 4, 5]

console.log(newArray) // [3, 4, 5]

Upvotes: 1

Views: 60

Answers (2)

Ran Turner
Ran Turner

Reputation: 18096

You can use concat for that.

The concat() method will join two (or more) arrays and will not change the existing arrays, but instead will return a new array, containing the values of the joined arrays.

const arr = [1, 2, 3];
const newArray = arr.concat([4, 5]);

console.log(newArray)

Another option is to use spread syntax (...) (introduced in ES6)

const arr = [1, 2, 3];
const newArray = [...arr, ...[4, 5]];

console.log(newArray)

Upvotes: 1

NeNaD
NeNaD

Reputation: 20354

Try this:

const arr = [1, 2, 3];
const newArray = [...arr, 4, 5];

console.log(newArray);

Upvotes: 1

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